Functional Fitness......?

So FB always talks about functional fitness in their workouts. I have never really thought too much about it until recently. We got 3.5 acres of property in the woods of Northern California. As I was attempting to pull dead manzanita off the acreage to prevent wildfire, I thought "SO this is what they mean by functional fitness." I used every muscle in my body and was able to withstand the rigor because of all the awesome workouts Kelli and Daniel provide. I still have have many more days of this kind of work ahead of me, but i know I'm well equipped. Thanks FB